Grain-separator



(No Model.)

I. HESS.

GRAIN SBPARATOR.

Pelnted July 21 f f A #orne y UNrTJED STATES PATENT OFFICE.

ISRAEL HESS, OF GOSHEN, INDIANA.

GIRAI N-SEPARATO R.

SPECIFICAT formi ig part of Letters Patent No. 322,820, dated July 21,1885.

Application filed April l0, 1885.

To all whom, it may concern.'

Be it known that I, ISRAEL Hass, a citizen of the United States,residing at Goshen, in the county of Elkhart and State of Indiana,haveinvented certain new and useful Improvements in GiainSep-aiatois;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the saine, reference beinghad to the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this speciiication. v

My invent-ion relates to grainseparators; and the novelty consists inthe construction, arrangement, and adaptation of parts, as'will be morefully hereinafter set forth, and specically pointed out in the claims.

I provide a peculiar upper or chaff screen having cross-bars with abruptsides in one direction and inclined sides in the other. The dependingedges of the abrupt sides are scalloped to present numerous faces to thedraft and to equalize the same, and this upper screen inclinesdownwardly away from the fan.

I do away with the necessity of shoes, and have the screens occupy theentire width of the casing. Each screen is oscillated by connections,and flexible shedding-cleats are provided to prevent the grain fromwedging between the screens and the sides of the casing. The severalscreens are given differential movements, and a carrier and elevatormay- 3, an enlarged detail of the upper or primary screen, and Fig. 4, adetail in section.

To enable others skilled in the art to which the invention relates tomake and use the invention, I will vdescribe the construction and modeof operation of the same, referring by letters for this purpose to theaccompanying drawings. y

A designates the main casing, having the (No model.)

ordinary bearings for a fanshaft and fan B at the front, and a trough,C, is arranged transversely along the rear, in which trough re volves aworm-conveyer, C, designed to carry the heavier refuse back to thehopper A by means of an ordinary elevator. The hopper A extends theent-ire width of the machine, to distribute the grain evenly over thescreens, and the upper screen, D, is suspended at the rear from theinner sides of the casing by hangers d.

Near the front end of the 'upper screen is journaled at d a crank-shaft,d2, which has journals in opposite sides ofthe box and carries a pulley,d4, which by a belt connects it with the fan-shaft.

Pivoted about centrally, as at f, to the opposite inner sides of thecasing A are two levers, F, and from pins j", near the upper ends ofthese levers, are suspended by brackets g the rear end of the screen G,the forward end of said screen G being journaled at y' upon acrank-shaft, H, which in turn is journaled in the frame and connected tothe power by a pulley, h.

The lower screen, I, inclines in the direction'of the fan or forwardly,and receives its motion by reason of being secured by brackets i to pinsf2, near the opposite ends of the levers F. K

The pivots of the levers F are about the middle of their length, as atf, and have their bearing in the side walls of the' case. The rear endsof the screens I and G are respectively suspended from the opposite endsof the said levers F by means of the brackets 'i and g and thepivot-pins ffl. Ihus it will be seen that when motion is v imparted tothe crank-shaft H by means of belt from the fan-shaft, the screen G willbe vibrated, and will communicate motion to the screen I through themedium of its connections therewith. It will be observed that the firstmovement of the screen G will be rearward, carrying the upper ends of'the levers F in a similar direction. This will move the lower ends ofthe said levers in the opposite direction, which will consequently movethe lower screen, I, simultaneously and in an opposite direction fromthe upper screen, G. The screen D not being directly connected witheither the screen IOO G or I, it will be seen that its movement mayldiffer in point of time or stroke from either of the latter-namedscreens.

The' screens are made to fit snugly within the walls of the casing, andthe screens G, I, and D have each shedding-cleats m,'as shown, toprevent grain from falling between the screens and the casing.

The screen G occupies an approximatelyhorizontal position, and has anoscillatory movement, which delays the grain and so agitates it thatwithout other provisions it would be liable to get between the saidscreen and the casing. To prevent this I provide flexid Able cleats R,which, secured at their upper edges to the inner surface ofthe case,fall over the edges of the cleats m upon either side of the screen.

The screen D has wires which run longitudinally of the same, and aresecured in the end rails thereof. rEhe side rails have inclined slots s,in which are received the ends of crosspieces S, of sheet niet-al. Eachof these crosspieces S is composed of a leaf7 s', which, when the partsare in place, presents an inclined side to the front ofthe machine, andan abrupt leaf, s2, which latter is arranged at an angle of aboutforty-five degrees with the leaf s', andv when the parts are in positionthese leaves sl stand vertically in the screen. The leaves s2 have theirlower edges scalloped,as seen at s3,

to form a number of faces, which will interrupt or distribute the blastand the iiow of grain. The leaves s s2 are made of single pieces ofsheet metal, and the longitudinal wires 85 pass through perforations inboth leaves.

The abrupt sides in the rapid oscillations or vibrations of the screen Dserve to throw the chaff, Src., to the rear, While the heaviery grainrides down the inclines to the screen'below, coming in contact with thefaces s or passing directly to the screen G. These faces s equalize ordistribute the blast around the screen D.

Modications in details of construction may be made without departingfrom the principle or sacrificing the advantages of the invention, theessential features of which will be readily understood from theforegoing description, taken in connection with the drawings.

Having thus fully described the invention, what I claim, and desire tosecure by Letters Patent of the United States, is-

1. In a grain-separator, the combination,

with the casing and the vibratory screen D, of the screens G and I, thecrank-shaft H, the levers F, having central pivotal bearings in the sidewalls of the casing, and the devices connecting them with the screen,substantially as specied. v

2. The screen D, composed of the side rails having slots, the end rails,the longitudinal wires, and the bent cross-bars of sheet metal arrangedin said slots and upon said Wires, and having inclined leaves on theirfront faces, and scalloped abrupt leaves s2 on their rear faces, as andfor the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ISRAEL HESS.

WVitnesses:

JOEL H. AUsTIN, VILBER L. S'roWs.

